Spare a moment, as you anticipate one of the most unusual summits in modern history, to consider North Korea's leader as he left the all-encompassing bubble of his locked-down stronghold of Pyongyang on Sunday and stepped off a jet onto Singapore soil for his planned sit-down with President Donald Trump on Tuesday. There's just no recent precedent for the gamble Kim Jong Un is taking. While Singapore has authoritarian leanings, it is still a thriving bastion of capitalism and wealth, and Kim will be performing his high-stakes diplomatic tight-rope walk in front of 3,000 international journalists, including a huge contingent from the ultra-aggressive South Korean press — sometimes referred to by Pyongyang as "reptile media" — two of whom were arrested by Singapore police investigating a report of trespassing at the residence of the North Korean ambassador.